<template>
  <Dialog :title="dialogTitle" v-model="dialogVisible" width="500px">
    <el-form
      ref="formRef"
      :model="formData"
      :rules="formRules"
      label-width="80px"
      v-loading="formLoading"
    >
      <el-form-item label="标题" prop="title">
        <el-input v-model="formData.title" placeholder="请输入单品标题" />
      </el-form-item>
      <el-form-item label="库存" prop="stock">
        <el-input-number v-model="formData.stock" :min="0" controls-position="right" placeholder="请输入库存数量" class="!w-full" />
      </el-form-item>
      <!-- 暂时不添加 useStock 字段 -->
    </el-form>
    <template #footer>
      <el-button @click="submitForm" type="primary" :disabled="formLoading">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>

<script lang="ts" setup>
import { ref, reactive } from 'vue'
import { ElMessage } from 'element-plus'
import * as SingleItemApi from '@/api/localLife/singleItem'

const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗

const dialogVisible = ref(false) // 弹窗的是否展示
const dialogTitle = ref('') // 弹窗的标题
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的操作
const formType = ref('') // 表单的类型：create - 新增；update - 修改
const formData = ref({
  id: undefined as number | undefined,
  title: '',
  stock: 0
})
const formRules = reactive({
  title: [{ required: true, message: '标题不能为空', trigger: 'blur' }],
  stock: [{ required: true, message: '库存不能为空', trigger: 'blur' }]
})
const formRef = ref() // 表单 Ref

/** 打开弹窗 */
const open = async (type: string, id?: number) => {
  dialogVisible.value = true
  dialogTitle.value = type === 'create' ? t('action.create') : t('action.update')
  formType.value = type
  resetForm()
  // 修改时，设置数据
  if (id) {
    formLoading.value = true
    try {
      // 获取单品详情
      const itemData = await SingleItemApi.getSingleItem(id);
      // 接口返回 title, stock, useStock，表单需要 title, stock
      formData.value = {
        id: itemData.id,
        title: itemData.title,
        stock: itemData.stock
        // useStock 字段在表单中未用到，无需赋值
      };
    } finally {
      formLoading.value = false
    }
  }
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  // 校验表单
  if (!formRef.value) return
  const valid = await formRef.value.validate()
  if (!valid) return
  // 提交请求
  formLoading.value = true
  try {
    const data = formData.value as SingleItemApi.SingleItemSaveReqVO
    if (formType.value === 'create') {
      await SingleItemApi.createSingleItem(data)
      message.success(t('common.createSuccess'))
    } else {
      await SingleItemApi.updateSingleItem(data)
      message.success(t('common.updateSuccess'))
    }
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success')
  } finally {
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    id: undefined,
    title: '',
    stock: 0
  }
  formRef.value?.resetFields()
}
</script> 